在RichTextBox中查找所有图像 [英] Find all images in a RichTextBox

问题描述

我想与嵌入式图像聊天.

I want a chat with inline images.

richtextbox很好，因为我可以在其中放置图像，但是我想单独发送文本/图像.

The richtextbox is good, because I can place images in it, but I want to send the text / images separate.

• 首先:发送文本(并在文本中放置图片占位符).
• 秒:发送图像并将其替换为占位符.

为此，我需要删除richtextbox中的所有图像(并将它们分开发送).但是如何找到这些图像?

For that I need to remove all images in the richtextbox (and send them separate). But how can I find the images?

还有BTW:是否可以根据RichTextBox的宽度重新缩放图像?

And BTW: Is it possible to rescale the image dependent on the width of the richtextbox?

推荐答案

要在RichTextBox中查找所有图像，您需要遍历所有段落及其内联；然后您可以对图像进行任何所需的操作.例如，以下代码将使RichTextBox中所有图像的大小(增加1个像素).

To find all images in a RichTextBox, you need to traverse through all Paragraphs and its Inlines; and then you can do whatever you need with the image. For example, the following code will increase the size (by 1 pixel) of all images inside a RichTextBox.

public static void ResizeRtbImages(RichTextBox rtb)
{
    foreach (Block block in rtb.Blocks)
    {
        if (block is Paragraph)
        {
            Paragraph paragraph = (Paragraph)block;
            foreach (Inline inline in paragraph.Inlines)
            {
                if (inline is InlineUIContainer)
                {
                    InlineUIContainer uiContainer = (InlineUIContainer)inline;
                    if (uiContainer.Child is Image)
                    {
                        Image image = (Image)uiContainer.Child;
                        image.Width = image.ActualWidth + 1;
                        image.Height = image.ActualHeight + 1;
                    }
                }
            }
        }
    }
}

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